gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gas / expr.h

diff --git a/gas/expr.h b/gas/expr.h
index 0ed6af603a73fd0a7159485e3e8ad0140e8b084c..c3e617401c4e4d2e4af1680f110fa4f0d60e85b8 100644 (file)
--- a/gas/expr.h
+++ b/gas/expr.h
@@ -1,11 +1,11 @@
 /* expr.h -> header file for expr.c
 /* expr.h -> header file for expr.c

-   Copyright (C) 1987, 92-98, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1987-2020 Free Software Foundation, Inc.

 
    This file is part of GAS, the GNU Assembler.
 
    GAS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
 
    This file is part of GAS, the GNU Assembler.
 
    GAS is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by

-   the Free Software Foundation; either version 2, or (at your option)
+   the Free Software Foundation; either version 3, or (at your option)

    any later version.
 
    GAS is distributed in the hope that it will be useful,
    any later version.
 
    GAS is distributed in the hope that it will be useful,


@@ -15,8 +15,8 @@
 
    You should have received a copy of the GNU General Public License
    along with GAS; see the file COPYING.  If not, write to the Free
 
    You should have received a copy of the GNU General Public License
    along with GAS; see the file COPYING.  If not, write to the Free

-   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-   02111-1307, USA.  */
+   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+   02110-1301, USA.  */

 
 /*
  * By popular demand, we define a struct to represent an expression.
 
 /*
  * By popular demand, we define a struct to represent an expression.


@@ -39,8 +39,7 @@
 
    NOTE: This enumeration must match the op_rank array in expr.c.  */
 
 
    NOTE: This enumeration must match the op_rank array in expr.c.  */
 

-typedef enum
-{
+typedef enum {

   /* An illegal expression.  */
   O_illegal,
   /* A nonexistent expression.  */
   /* An illegal expression.  */
   O_illegal,
   /* A nonexistent expression.  */


@@ -68,23 +67,23 @@ typedef enum
   O_multiply,
   /* (X_add_symbol / X_op_symbol) + X_add_number.  */
   O_divide,
   O_multiply,
   /* (X_add_symbol / X_op_symbol) + X_add_number.  */
   O_divide,

-  /* X_add_symbol % X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol % X_op_symbol) + X_add_number.  */

   O_modulus,
   O_modulus,

-  /* X_add_symbol << X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol << X_op_symbol) + X_add_number.  */

   O_left_shift,
   O_left_shift,

-  /* X_add_symbol >> X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol >> X_op_symbol) + X_add_number.  */

   O_right_shift,
   O_right_shift,

-  /* X_add_symbol | X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol | X_op_symbol) + X_add_number.  */

   O_bit_inclusive_or,
   O_bit_inclusive_or,

-  /* X_add_symbol |~ X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol |~ X_op_symbol) + X_add_number.  */

   O_bit_or_not,
   O_bit_or_not,

-  /* X_add_symbol ^ X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol ^ X_op_symbol) + X_add_number.  */

   O_bit_exclusive_or,
   O_bit_exclusive_or,

-  /* X_add_symbol & X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol & X_op_symbol) + X_add_number.  */

   O_bit_and,
   O_bit_and,

-  /* X_add_symbol + X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol + X_op_symbol) + X_add_number.  */

   O_add,
   O_add,

-  /* X_add_symbol - X_op_symbol) + X_add_number.  */
+  /* (X_add_symbol - X_op_symbol) + X_add_number.  */

   O_subtract,
   /* (X_add_symbol == X_op_symbol) + X_add_number.  */
   O_eq,
   O_subtract,
   /* (X_add_symbol == X_op_symbol) + X_add_number.  */
   O_eq,


@@ -107,12 +106,13 @@ typedef enum
   /* machine dependent operators */
   O_md1,  O_md2,  O_md3,  O_md4,  O_md5,  O_md6,  O_md7,  O_md8,
   O_md9,  O_md10, O_md11, O_md12, O_md13, O_md14, O_md15, O_md16,
   /* machine dependent operators */
   O_md1,  O_md2,  O_md3,  O_md4,  O_md5,  O_md6,  O_md7,  O_md8,
   O_md9,  O_md10, O_md11, O_md12, O_md13, O_md14, O_md15, O_md16,

+  O_md17, O_md18, O_md19, O_md20, O_md21, O_md22, O_md23, O_md24,
+  O_md25, O_md26, O_md27, O_md28, O_md29, O_md30, O_md31, O_md32,

   /* this must be the largest value */
   O_max
 } operatorT;
 
   /* this must be the largest value */
   O_max
 } operatorT;
 

-typedef struct expressionS
-{
+typedef struct expressionS {

   /* The main symbol.  */
   symbolS *X_add_symbol;
   /* The second symbol, if needed.  */
   /* The main symbol.  */
   symbolS *X_add_symbol;
   /* The second symbol, if needed.  */


@@ -135,6 +135,11 @@ typedef struct expressionS
      when performing arithmetic on these values).
      FIXME: This field is not set very reliably.  */
   unsigned int X_unsigned : 1;
      when performing arithmetic on these values).
      FIXME: This field is not set very reliably.  */
   unsigned int X_unsigned : 1;

+  /* This is used to implement "word size + 1 bit" arithmetic, so that e.g.
+     expressions used with .sleb128 directives can use the full range available
+     for an unsigned word, but can also properly represent all values of a
+     signed word.  */
+  unsigned int X_extrabit : 1;

 
   /* 7 additional bits can be defined if needed.  */
 
 
   /* 7 additional bits can be defined if needed.  */
 


@@ -142,32 +147,45 @@ typedef struct expressionS
   unsigned short X_md;
 } expressionS;
 
   unsigned short X_md;
 } expressionS;
 

-/* "result" should be type (expressionS *). */
-#define expression(result) expr (0, result)
+enum expr_mode
+{
+  expr_evaluate,
+  expr_normal,
+  expr_defer
+};
+
+/* "result" should be type (expressionS *).  */
+#define expression(result) expr (0, result, expr_normal)
+#define expression_and_evaluate(result) expr (0, result, expr_evaluate)
+#define deferred_expression(result) expr (0, result, expr_defer)

 
 /* If an expression is O_big, look here for its value. These common
 
 /* If an expression is O_big, look here for its value. These common

-   data may be clobbered whenever expr() is called. */
-/* Flonums returned here.  Big enough to hold most precise flonum. */
+   data may be clobbered whenever expr() is called.  */
+/* Flonums returned here.  Big enough to hold most precise flonum.  */

 extern FLONUM_TYPE generic_floating_point_number;
 extern FLONUM_TYPE generic_floating_point_number;

-/* Bignums returned here. */
+/* Bignums returned here.  */

 extern LITTLENUM_TYPE generic_bignum[];
 extern LITTLENUM_TYPE generic_bignum[];

-/* Number of littlenums in above. */
+/* Number of littlenums in above.  */

 #define SIZE_OF_LARGE_NUMBER (20)
 
 typedef char operator_rankT;
 
 #define SIZE_OF_LARGE_NUMBER (20)
 
 typedef char operator_rankT;
 

-extern char get_symbol_end PARAMS ((void));
-extern void expr_begin PARAMS ((void));
-extern void expr_set_precedence PARAMS ((void));
-extern segT expr PARAMS ((int rank, expressionS * resultP));
-extern unsigned int get_single_number PARAMS ((void));
-extern symbolS *make_expr_symbol PARAMS ((expressionS * expressionP));
-extern int expr_symbol_where
-  PARAMS ((symbolS *, char **, unsigned int *));
-
-extern symbolS *expr_build_uconstant PARAMS ((offsetT));
-extern symbolS *expr_build_unary PARAMS ((operatorT, symbolS *));
-extern symbolS *expr_build_binary PARAMS ((operatorT, symbolS *, symbolS *));
-extern symbolS *expr_build_dot PARAMS ((void));
-
-/* end of expr.h */
+extern char get_symbol_name (char **);
+extern char restore_line_pointer (char);
+extern void expr_begin (void);
+extern void expr_set_precedence (void);
+extern void expr_set_rank (operatorT, operator_rankT);
+extern void add_to_result (expressionS *, offsetT, int);
+extern void subtract_from_result (expressionS *, offsetT, int);
+extern segT expr (int, expressionS *, enum expr_mode);
+extern unsigned int get_single_number (void);
+extern symbolS *make_expr_symbol (expressionS * expressionP);
+extern int expr_symbol_where (symbolS *, const char **, unsigned int *);
+extern void current_location (expressionS *);
+
+extern symbolS *expr_build_uconstant (offsetT);
+extern symbolS *expr_build_dot (void);
+
+int resolve_expression (expressionS *);
+
+extern bfd_boolean literal_prefix_dollar_hex;